char CData can't be directly assigned a number

Description

The following code:

<?php

$v = FFI::new("char[2]");
$v[0] = 65;
var_dump($v);

Resulted in this output:

Fatal error: Uncaught FFI\Exception: Incompatible types when assigning to type 'char' from PHP 'int' in Command line code:1
Stack trace:
#0 {main}
  thrown in Command line code on line 1

But I expected this output instead:

object(FFI\CData:char[2])#1 (2) {
  [0]=>
  string(1) "A"
  [1]=>
  string(1) ""
}

It's somewhat weird to have to type cast around, i.e. I could just do a FFI::cast to uint8_t * and it works. But for some reason, char is special. Seems like an arbitrary restriction to me, and it really should accept both.

PHP Version

master

Operating System

No response

issue の PHP FFI の例を再現し、char 型の CData 値への代入の処理を追跡します。関連する FFI の実装と既存の FFI テストを見つけ、整数を char に代入する場合のカバレッジを追加して、期待される文字値が生成されることを確認します。